| 摘要 |
PROBLEM TO BE SOLVED: To provide a velocity controller of an induction motor which can control the flicker without any additional device. SOLUTION: A primary current of an induction motor 2 is detected with a current detector 14, a flicker element is extracted from the primary current detection signal with a flicker detection circuit 26, and an output current of a reverse converter 10 is controlled to make zero the flicker element with a flicker suppresor controller 27. |
